Hitachi PC-ARF Technical Catalogue page 91

4 Individual remote controls
PC-ARF
b7 - Fixing of Operation as Exclusive Cooling Unit
This function is utilized when exclusive cooling operation is required.
This function invalidates the heating operation and the automatic COOL/HEAT operation setting from the remote control
switch, as in the operation of exclusive cooling unit.
b8 - Automatic COOL/HEAT Operation
This function is utilized to change the cooling and heating operation automatically (the same operation mode for indoor
units in the same refrigerant cycle).
This function is invalid when the outdoor unit is cooling-only model or the function of "Fixing of Operation as Exclusive
Cooling Unit" is valid.
b9 - Fixing of Fan Speed
This function is utilized to fix the fan speed.
When this function is valid, the fan speed cannot be changed by the remote control switch.
bA - Not Prepared
bb - Cooling Temperature Compensation (due to Uneven Heat Load)
This function is utilized to provide the longer cooling operation time than the standard.
When this function is valid, Thermo-ON/OFF is controlled under the lower temperature conditions than the setting tem-
perature (the indicated value) by the remote control switch.
Setting Temperature for Room Temperature Control during Cooling
Setting Condition
00 (Standard)
01
02
N O T E
The minimum setting temperature after correction is 19
bC - Not Prepared
bd - Not Prepared
bE - Not Prepared
C1 - Not Prepared
C2 - Not Prepared
C3 - Not Prepared
C4 - Not Prepared
C5 - Hi Speed (Except for Hi Speed during Heating Thermo-OFF)
This function is utilized to increase the fan speed for the sufficient air flow volume. It is recommended to use this function
when the air flow volume is decreased by using the optional deodorant air filter, or installing the unit on the high ceiling
etc.
C6 - Hi Speed during Heating Thermo-OFF
Not Used (Use as 00 conditions)
C7 - Cancelling of Enforced 3 Minutes Minimum Operation Time of Compressor
The function (3) "Enforced 3 Minutes Minimum Operation Time of Compressor" is the standard function. This function
is utilized to cancel the function (3) "Enforced 3 Minutes Minimum Operation Time of Compressor" (Enforced 3 Minutes
Compressor Guard).
C8 - Thermistor of Remote Control Switch
This function is utilized to control the unit by the built-in thermistor of the remote control switch (remote control thermistor)
instead of the inlet air thermistor.
Set this function at "01" or "02" when utilizing this function.
However, the control is changed to the inlet air thermistor of the indoor unit automatically if the detected temperature is
abnormal due to the failure of the remote control thermistor, etc..
75
TCGB0106 rev.0 - 12/2014
Actual Control Temperature
Remote Control Switch Setting Temperature (Indicated Value)
Remote Control Switch Setting Temperature (Indicated Value) -1
Remote Control Switch Setting Temperature (Indicated Value) -2
C.
o
C
o
C
o
4